Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Quartz from
Wheal Crofty (Old Wheal Crofty; incl. Wheal Knight; Wheal Vernon), North Roskear, Camborne, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Wheal Crofty (Old Wheal Crofty; incl. Wheal Knight; Wheal Vernon), North Roskear, Camborne, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:565345
Long-form Identifier:1:3:565345:4
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.3km (0.2 miles) ⓘWheal Seton, North Roskear, Camborne, Cornwall, England, UK
0.4km (0.2 miles) ⓘNorth Roskear, Camborne, Cornwall, England, UK
0.4km (0.3 miles) ⓘEast Wheal Seton, Tolvaddon, Illogan, Cornwall, England, UK
0.4km (0.3 miles) ⓘNorth Roskear Mine, North Roskear, Camborne, Cornwall, England, UK
0.5km (0.3 miles) ⓘNew Roskear Shaft, Dolcoath Mine, Camborne, Cornwall, England, UK
0.6km (0.3 miles) ⓘNorth Wheal Crofty, Pool, Carn Brea, Cornwall, England, UK
0.6km (0.4 miles) ⓘLongclose Mine, Pool, Carn Brea, Cornwall, England, UK
0.6km (0.4 miles) ⓘSouth Roskear Mine, South Roskear group (Pendarves Consols), Camborne, Cornwall, England, UK
0.7km (0.4 miles) ⓘWheal Emily Henrietta (Tolvaddon Mine), Tolvaddon, Illogan, Cornwall, England, UK
0.7km (0.5 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
References
Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.
 
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